At latest update, relevant information on excretion into breast milk was not found. Due to a high serum-protein-binding capacity, excretion of Rabeprazole into breast milk in significant levels is unlikely. Since it's neutralized by the acid pH of stomach, capsules with enteric coated granules are used. Because of this, it is thought that the small quantity of Rabeprazole that may reach the breast milk would be neutralized by infant's stomach. In addition, absorption is greatly decreased by the presence of food. Both Omeprazole and Pantoprazole pertain to the same chemical group with similar pharmacokinetics that are excreted in non-significant amount into the breast milk. No alteration on serum Prolactin level has been shown.